1 (8 oz.) pkg. sharp cheddar cheese
1 (8 oz.) pkg. mild cheddar cheese
1 (8 oz.) pkg. Velveeta cheese
1 (8 oz.) pkg. cream cheese
1 tbsp. Worcestershire sauce
1 sm. chopped onion

Grate cheeses and mix together well. Add Worcestershire sauce and onion; mix. Roll in a ball and cover with chopped nuts.